Harun al-Rashid - Khalīfah of al-Khilāfatu al-‘Abbāsīyah from AD 786 to AD 809
Harun al-Rashid (Arabic: هَارُون الرَشِيد‎‎) was the fifth Abbasid Caliph, and ruled from 786 to 809, during the peak of the Islamic Golden Age.

His time was marked by scientific, cultural, and religious prosperity. He established the legendary library Bayt al-Hikma ("House of Wisdom") in Baghdad, and during his rule the city flourished as a center of knowledge, culture and trade.

The famous literary work 'The Book of One Thousand and One Nights' contains many stories of Harun's magnificent court and even Harun al-Rashid himself. It is believed to be almost entirely fictional.
Harun al-Rashid
Caliph Harun al-Rashid "the Just" of the Abbasid Caliphate

Epithet: al-Rashid ("the Just")

(1) Harun al-Rashid 798 AD
Obverse: Margin: بسم الله ضرب هذا الدرهم بمدينة السلام سنة اثنتين و ثمنين و مئة Center: لا اله الا الله وحده لا شرك له
Reverse: Margin: محمد رسول الله ارسله بالهدى و دين الحق ليظهره على الدين كله ولو كره المشركون Center: محمد رسول الله مما امر به الامير الامين محمد بن امير المؤمنين جعفر
Ref: L. 833 Lowick